a-a a-b aaa aab aam aar aau aav ab- aba abb abm abr abu abv ama amb amm amr amu amv ar- ara arb arm arr aru arv au- aua aub aum aur auv av- ava avb avm avr avu b-u baa bab bam bar bau bav bba bbb bbm bbr bbu bma bmb bmm bmr bmu bmv bra brb brm brr bru brv bua bub bum bur buu bva bvb bvm bvr bvu bvv m-r m-v maa mab mam mar mau mav mba mbb mbm mbr mbu mbv mma mmb mmm mmr mmu mmv mra mrb mrm mrr mru mrv mua mub mum mur muu mva mvb mvm mvr mvv ra- raa rab ram rar rau rav rba rbb rbm rbr rbu rma rmb rmm rmr rmv rra rrb rrm rrr rru rua rub rum rur ruu ruv rva rvb rvm rvr rvu rvv ua- uaa uab uam uar uau uav uba ubb ubr ubu ubv um- uma umb umm umr umu ur- ura urb urm urr uru uua uum uur uuu uva uvb uvm uvu uvv v-a vaa vab vam var vau vav vba vbm vbr vbv vm- vma vmm vmr vmu vra vrb vrm vrr vru vum vur vuv vva vvb vvm vvr vvv